Hydraulic turbine.



E. F. UASSEL. HYDRAULIU TURBINE, APPLICATION FILED 00122, 1906.

921,95), Patented May 18, 1909.

(g2 WITNESSES. IVENTOR MMM UNITED STATE PT OFFIQ.

ELMER F. GASSEL, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO ALLIS-OHALMERSCOMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF NEW JERSEY.

HYDRAULIC TURBINE.

Specification of Letters Patent.

Patented May 18, 1909.

Application filed. October 22, 1906. Serial No. 339,912.

To all whom it may concern:

Be it known that I, ELMER F. OAssEL, a citizen of the United States,residing at Milwaukee, in the county of Milwaukee and State ofWisconsin, have invented certain new and useful Improvements inHydraulic Turbines, of which the following is a specification.

This invention relates to hydraulic turbines and specifically to thearrangement of the means for operating the gates which control the flowof water through a turbine.

It is customary in some types of turbines to use a plurality of gatesfor controlling the flow of Water and it is important that these gatesbe freely movable. It is customary to provide a stuffing box in thecasing for each gate stem and to connect the stems outside the casing sothat all of the gates can be moved simultaneously. The use of aplurality of stuffing boxes is objectionable on account of theirtendency to leak and the resistance they offer to the movement of thegates, especially when the packing is set up to stand high pressures.

The object of this invention is to so arrange and dispose the severalparts of a turbine structure that the plurality of stuffingboxes may bedis ensed with, and this is ac complished by p acing the gate operatingmec anism within a casing which to all intents and purposes is the maincasing of the turbine but which for structural reasons is preferablyformed as a separate casing and secured to the main casing.

This invention therefore provides a turbine casing, which is providedwith a plurality of gates for controlling the flow of water into therunner, with means for operating said gates, said means being disposedwithin a water space of the casing, and said means in turn beingcontrolled through a single shaft which projects outwardly from saidcasing through a stufiing box.

In the drawings which accompany this specification and form a part ofthe same and on which the same reference characters are used to indicatethe same elements in each of the several views, Figure 1 represents avertical section through a turbme embodying this invention. Fig. 2 is anelevation of one of the water controlling gates viewed at right anglesto the position in which it is shown in Fig. 1. Fig. 3 is an elevation,taken at right angles to the view shown in Fig. 1, of

a fragment of the casing and ring showing the connection of the ringwith two of the water gate arms.

Numeral 1 represents the shaft of a turbine; 2 the runner mountedthereon, and 3 the complete casing of the turbine inclosing the runnerand provided with the water inlet space 4 and the water outlet space 5,all of which may be of the ordinary or any preferred construction.Controlling thoroughfares between the water passage 4 and the interior 6of the casing 3, are a plurality of gates 7. Each of these gates isprovided with a wing portion 9 which is supported approximately midwayof its length upon a stem 10, said disposition of the parts being suchthat the wing member 9 will not be turned in either direction about itsstem 10 by reason of the water pressure. The stems 10 are seated in thering member 11 and project outwardly into a space 12 which is formed bythe casing 13 secured to the turbine casing. Upon the end of each of thestems 10 and in the chamber 12 is disposed a crank arm 14, each of whichis in turn connected with a link or ring 15 by means of links 16 pivotedto said ring and to said crank arms.

The numeral 17 represents a stuffing box or gland secured to the casing13 through which projects the shaft 18 into the chamber 12 and withinsaid chamber said shaft is provided with the crank arm 19 which engageswith the ring 15 by means of the link 20, which is substantially aduplicate of the links 16, and the pins 21 and 22, the ring 15.beingprovided with the inturned projection 23 to more readily accommodatethis form of con nection.

The numeral 24 represents bushings which may be of brass or any suitablemetal to prevent the stems 10, which are usually composed of steel oriron, from corroding and sticking. Each of the stems 10 is provided witha thoroughfare 40 extending from end to end through which the pressuresof the water in sockets 11 and space 12 are equalized.

The operation of the apparatus is as follows: Water is admitted from theusual penstock or equivalent device to the water passage 41 from whenceit passes through the thoroughfares controlled by the gates 7 to theinterior 6 of the casing 3, being, however, for the most part directedimmediately into the channels of the runner 2, from whence it isdischarged through the outlet passage ol the casing. The stems of thegates 7 are seated comparatively loosely in the bushings 241- and theWater consequently can escape somewhat between saidstems and saidbushings, and in so escaping will pass into the space 12 containedWithin the casing 13, but will be retained therein, as said casing isclosed except for the stuliing boa 17. By rotating the shaft 18 more orless in either direction the ring 15 is rotated, to a certain extentwhereby the links 16 are actuated,

moving the crank arms 14 and opening or closing more or less the gates7.

The improvement which results from this arrangement of the several partsreally consists in locating the movable elements Which are necessary toactuate a plurality of gates Within the turbine casing so that the gatescan be fitted comparatively loosely whereby ease of operation is assuredand access is had to the gates for manipulating them through a singlestuffing box;

What I claim is,

7 The combination of a casing, a runner in the interior oi said casing,an inlet passage 1n said casing and an outlet passage leading from saidcasing, thoroughfares leading from said inletpassage to said runner,gates controlling said thoroughfares, a space in said casing, a socketin said casing for loosely seating one end of one of said gates, a seatin said casing for loosely seating the other end of said one of saidgates whereby said end extends into said space, balancing ports throughsaid gates connecting said seats With said space, operating ineansinsaid space for commonly operating said gates, a single G. J. DEVVEIN,FRANK E. BENNETT.

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